Location : The M4 westbound between junctions J4B and J5 .
Lane Closures : Lanes 1 and 2 will be closed.
Reason : Roadside drains works are planned.
Status : Pending.
Schedule : From 21:00 on 27 April 2026 to 06:00 on 28 April 2026.
Lanes Closed : There will be two of four lanes closed.
